Beatrice is a mysterious and powerful spirit residing in the Roswaal Mansion in the anime series Re: Zero kara Hajimeru Isekai Seikatsu. She serves as the keeper of the Forbidden Library, a vast repository of knowledge. Despite her young appearance, Beatrice is over 400 years old and possesses immense magical power. Her demeanor is often cold and detached, which masks her loneliness and desire for companionship. Throughout the series, she becomes an important ally to the protagonist, Subaru Natsuki, and plays a crucial role in his journey to protect his friends and uncover the mysteries of the world.